trunk/Src/wptFileManager.cpp

/* wptFileManager.cpp - File Manager routines
 *      Copyright (C) 2001-2005 Timo Schulz
 *      Copyright (C) 2005 g10 Code GmbH
 *
 * This file is part of WinPT.
 *
 * WinPT is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License 
 * as published by the Free Software Foundation; either version 2 
 * of the License, or (at your option) any later version.
 *  
 * WinPT is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License 
 * along with WinPT; if not, write to the Free Software Foundation, 
 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 
 */
/* TODO: 
 *    check_armor_type: we should check the whole file and not only the first line! 
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <sys/types.h>
#include <windows.h>
#include <commdlg.h>
#include <io.h>
#include <stdio.h>

#include "resource.h"
#include "wptTypes.h"
#include "wptGPG.h"
#include "wptAgent.h"
#include "wptCommonCtl.h"
#include "wptContext.h"
#include "wptErrors.h"
#include "wptKeylist.h"
#include "wptFileManager.h"
#include "wptNLS.h"
#include "wptW32API.h"
#include "wptVersion.h"
#include "wptDlgs.h"
#include "wptZIP.h"
#include "wptUTF8.h"
#include "wptRegistry.h"
#include "wptImport.h"
#include "wptCrypto.h"
#include "openpgp.h"

#define op_begin()  SetCursor (LoadCursor (NULL, IDC_WAIT))
#define op_end()    SetCursor (LoadCursor (NULL, IDC_ARROW))

void progress_cleanup (progress_filter_s *pfx);
BOOL CALLBACK file_secdel_confirm_dlg_proc (HWND dlg, UINT msg, 
                                            WPARAM wparam, LPARAM lparam);
char* gpg_keylist_to_pattern (gpgme_key_t *rset, int n);
gpgme_error_t sym_passphrase_cb (void *hook, const char *hint, const char *pass_inf,
                                 int prev_was_bad, int fd);

/*-- wptFileVerifyDlg.cpp --*/
void file_verify_add_state (file_sig_ctx_t c);
void file_verify_use_event (void);
void file_verify_wait (void);

static const char * mm_files[] = {".mov", ".avi", ".mpg", ".mpeg",
                                  ".mp3", ".wav", ".mid", ".wma",
                                  ".gif", ".jpg", ".png", ".jpeg", ".dib", 0};


/* Check if the drive given by @fname is a floppy disc.
   Return value: -1 for success. */
static int
is_floppy_disc (const char *fname)
{
    char drv[32] = {0};    
    int max = sizeof (drv)-1;
    int i=0;

    if (!strstr (fname, ":\\"))
        return 0;

    while (fname && *fname && *fname != '\\' && i < max)
        drv[i++] = *fname++;
    drv[i++] = '\\';
    drv[i++] = '\0';
    i = GetDriveType (drv);
    if (i == DRIVE_REMOVABLE)
        return -1;
    return 0;
}


/* Ask the user to overwrite file @fname.
   Return value: 0 for cancel. */
static int
overwrite_file (const char *fname)
{
    int id;

    if (file_exist_check (fname))
        return -1;
    id = log_box (_("File Manager"), MB_YESNO,
                  _("\"%s\" already exists.\n"
                    "Replace existing file?"), fname);
    return id == IDNO ? 0 : -1;
}


/* Removes 'critical' attributes from the file @fname.
   If @force is 1, the user is not asked for permission. */
static void
remove_crit_file_attrs (const char *fname, int force)
{
    u32 fattr;
    int id = 0;

    if (file_exist_check (fname))
        return; /* Does not exist */
        
    fattr = GetFileAttributes (fname);
    if ((fattr & FILE_ATTRIBUTE_READONLY) && force)
        id = IDYES;
    else if (fattr & FILE_ATTRIBUTE_READONLY)
        id = log_box (_("File Manager"), MB_YESNO,          
                      _("\"%s\" has read-only attribute.\n"
                        "Set attribute to normal?"), fname);
    if (id == IDYES) {
        if (!SetFileAttributes (fname, FILE_ATTRIBUTE_NORMAL))
            msg_box (NULL, _("Could not reset file attribute to normal."),
                     _("File Manager"), MB_ERR);
    }
}


/* Return 1 if the given path @fname is a directory, 0 otherwise. */
static int
is_directory (const char *fname)
{
    return GetFileAttributes (fname) & FILE_ATTRIBUTE_DIRECTORY? 1 : 0;
}


/* Return -1 if the given name @name is a valid PGP extension. */
static int
is_openpgp_ext (const char *name)
{
    if (stristr (name, ".gpg") || stristr (name, ".asc")
        || stristr (name, ".sig") || stristr (name, ".pgp"))
        return -1;
    return 0;
}


static int
is_multi_media (const char * name)
{    
    const char * val;
    char * p;
    int i;
    int ans=0;

    i = get_reg_winpt_single (CFG_NOZIP_MMEDIA);
    if (i == -1) 
    {
        ans = msg_box (NULL, _("Multi-Media files are already compressed, GPG would compress\n"
                               "them anyway and this costs a lot of time.\n"
                               "It is possible to disable compression for these files.\n"
                               "Do you want to disable it?"), 
                               _("File Manager"), MB_YESNO|MB_INFO);
        set_reg_winpt_single (CFG_NOZIP_MMEDIA, ans == IDYES? 1 : 0);
        if (ans == IDNO)
            return 0;
    }
    else if (i == 0)
        return 0;

    p = strrchr (name, '.');
    if (!p)
        return 0;
    for (i=0; (val = mm_files[i]); i++) {
        if (!stricmp (p, val))
            return -1;
    }
    return 0;
}


/* Return a GPG file extension which depends on the operation
   mode in @ctx and the sig mode @sigmode. */
const char*
file_get_extension (gpgme_ctx_t ctx, gpgme_sig_mode_t sigmode)
{
    int use_armor = gpgme_get_armor (ctx);

    if (use_armor || sigmode == GPGME_SIG_MODE_CLEAR)
        return ".asc";
    if (!use_armor && sigmode == GPGME_SIG_MODE_DETACH)
        return ".sig";
    return ".gpg";
}


/* Quote a file to avoid shell problems with spaces in the files. */
char*
fm_quote_file (const char * name)
{
    char * p;
    size_t len = strlen (name) + 8;

    if (*name == '"')
        return m_strdup (name); /* avoid double quotes */
    p = new char[len + 1];
    if (!p)
        BUG (0);
    _snprintf (p, len, "\"%s\"", name);

    return p;
}


/* Check the armor type of the file @fname and return
   a string representation of it. */
static const char *
fm_check_armor_type (const char *fname, int *r_type)
{
    FILE * fp;
    char header[768], * p;
    
    if (r_type)
        *r_type = PGP_NONE;
    fp = fopen (fname, "rb");
    if (!fp)
        return "UNKNOWN";
    p = fgets (header, sizeof (header) - 1, fp);
    fclose (fp);
    if (!p)
        return "UNKNOWN";

    if (strncmp (header, "-----", 5))
        goto leave;
    if (strstr( header, "BEGIN PGP PUBLIC KEY" )) {
        if (r_type) *r_type = PGP_PUBKEY;
        return "PUBKEY";
    }
    else if (strstr (header, "BEGIN PGP PRIVATE KEY") || 
             strstr (header, "BEGIN PGP SECRET KEY")) {
        if (r_type) *r_type = PGP_SECKEY;
        return "SECKEY";
    }
    else if (strstr (header, "BEGIN PGP MESSAGE")) {
        if (r_type) *r_type = PGP_MESSAGE;
        return "ENCRYPTED";
    }
    else if (strstr( header, "BEGIN PGP SIGNED MESSAGE")) {
        if (r_type) *r_type = PGP_CLEARSIG;
        return "SIGNED-CLEAR";
    }
    else if (strstr(header, "BEGIN PGP SIGNATURE")) {
        if (r_type) *r_type = PGP_SIG;
        return "SIGNED-DETACH";
    }

leave:
    return "UNKNOWN";
}


/* Extract file type from @fname. If @r_type is valid,
   it contains the PGP type on success. */
static const char *
fm_get_file_type (const char *fname, int *r_type)
{        
    gpg_iobuf_t inp;
    armor_filter_context_t afx;
    PACKET *pkt;
    const char *s = NULL;
    int rc = 0;

    if (r_type)
        *r_type = PGP_NONE;
    if (!fname) {
        log_debug ("fm_get_file_type: !fname\r\n");
        return NULL;
    }

    if (is_floppy_disc (fname)) 
        return fm_check_armor_type (fname, r_type);

    inp = gpg_iobuf_open (fname);
    if (!inp) {
        const char *err = winpt_strerror (WPTERR_FILE_OPEN);
        log_box (_("File Manager"), MB_ERR, "\"%s\": %s", fname, err);
        return NULL;
    }
    gpg_iobuf_ioctl (inp, 3, 1, NULL); /* disable cache */
    if (gpg_iobuf_get_filelength (inp) > 32000000 /* 32MB */
        && !is_openpgp_ext (fname)) {
        gpg_iobuf_close (inp);
        return "UNKNOWN";
    }

    if (gpg_use_armor_filter(inp)) {
        memset (&afx, 0, sizeof (afx));
        gpg_iobuf_push_filter (inp, gpg_armor_filter, &afx);
    }
    pkt = (PACKET *)calloc (1, sizeof *pkt);
    if (!pkt)
        BUG (NULL);
    gpg_init_packet (pkt);
    while (!(rc = gpg_parse_packet (inp, pkt))) {
        switch (pkt->pkttype) {
        case PKT_PUBKEY_ENC:
            s = "ENCRYPTED";rc = -2; 
            if (r_type) *r_type = PGP_MESSAGE;
            break;
        case PKT_SYMKEY_ENC:
        case PKT_ENCRYPTED:
            s = "SYMKEYENC";rc = -2; 
            if (r_type) *r_type = PGP_MESSAGE;
            break;
        case PKT_SIGNATURE:
        case PKT_ONEPASS_SIG:
            s = "SIGNED";   rc = -2; 
            if (r_type) *r_type = PGP_SIG;
            break;
        case PKT_PUBLIC_KEY:
            s = "PUBKEY";   rc = -2; 
            if (r_type) *r_type = PGP_PUBKEY;
            break;
        case PKT_SECRET_KEY:
            s = "SECKEY";   rc = -2;
            if (r_type) *r_type = PGP_SECKEY;
            break;
            
        default:
            break;
        }
        gpg_free_packet (pkt);
        gpg_init_packet (pkt);
        if (rc == -2)
            break; /* found */
    }
    safe_free (pkt);
    gpg_iobuf_close (inp);
    if (!s)
        s = fm_check_armor_type (fname, r_type);
    if (!s)
        s = "UNKNOWN";
    if (!strcmp (s, "SIGNED")
        && strcmp (fm_check_armor_type (fname, r_type), "SIGNED-CLEAR ")) {
        if (r_type) *r_type = PGP_SIG;
        s = "SIGNED-DETACH";
    }
    return s;
}


int
fm_build (listview_ctrl_t *lv, HWND ctrl)
{
    int i, rc = 0;
    listview_ctrl_t c;
    struct listview_column_s col[] = 
    {
        {0,  80, (char *)_("Status") },
        {1, 256, (char *)_("Name") },
        {2, 128, (char *)_("Operation") },
        {0,   0, NULL } 
    };
        
    rc = listview_new( &c );
    if( rc )
        BUG( NULL );
    c->ctrl = ctrl;
    for ( i = 0; col[i].width; i++ )
        listview_add_column( c, &col[i] );
    listview_set_ext_style( c );
    if( lv )
        *lv = c;
    return 0;
} /* fm_build */


void
fm_delete( listview_ctrl_t lv )
{
    if( lv ) {
        listview_release( lv ); 
    }
} /* fm_delete */


int
fm_state_new (fm_state_t * ctx)
{
    gpgme_error_t rc;
    fm_state_s * c;

    c = new fm_state_s;
    if (!c)
        BUG (0);
    memset (c, 0, sizeof *c);
    rc = gpgme_new (&c->ctx);
    if (rc)
        BUG (0);
    /* XXX rc = gpgme_recipients_new (&c->recp);*/
    /* XXX gpgme_set_comment (c->ctx, "Generated by WinPT "PGM_VERSION); */
    *ctx = c;
    return 0;
} /* fm_state_new */


/* Release the FM state handle @c. */
void
fm_state_release (fm_state_t c)
{
    if (!c)
        return;
    if (c->recp)
        free (c->recp);
    if (c->ctx) {
        gpgme_release (c->ctx);
        c->ctx = NULL;  
    }
    free_if_alloc (c->opaque);
    free_if_alloc (c->output);
    delete c; c = NULL;    
}

static int
fm_check_for_entry( listview_ctrl_t lv, const char *file )
{
    char name[512];
    int i;

    memset (name, 0, sizeof (name));
    for (i = 0; i < listview_count_items( lv, 0 ); i++) {
        listview_get_item_text( lv, i, 1, name, sizeof (name) - 1 );
        if( !strcmp( name, file ) )
            return 1; /* found */       
    }

    return 0;
} /* fm_check_for_entry */


static int
fm_set_ftype (listview_ctrl_t lv, const char *name)
{
    const char *type;
    int rc;

    rc = fm_check_for_entry (lv, name);
    if (rc)
        return 0;
    type = fm_get_file_type (name, NULL);
    if (!type || !strcmp (type, "UNKNOWN"))
        type = gnupg_check_file_ext (name, NULL);
    rc = listview_add_item (lv, " ");
    if (rc)
        return -1;
    listview_add_sub_item (lv, 0, 0, type);
    listview_add_sub_item (lv, 0, 1, name);
    return 0;
}


static int
fm_add_dir_files (listview_ctrl_t lv, char *path)
{
    struct _finddata_t fd;
    char * p;
    long hd;

    strcat (path, "\\*");
    hd = _findfirst (path, &fd);
    do {
        p = new char [(strlen (path) + strlen (fd.name))+1];
        if (!p)
            BUG (0);
        memcpy (p, path, strlen (path)-1);
        p[strlen (path)-1] = 0;
        strcat (p, fd.name);
        if (!is_directory (p))
            fm_set_ftype (lv, p);
        free_if_alloc (p);
    } while (_findnext (hd, &fd) == 0);
    _findclose (hd);
    return 0;
}


/* Add the drag & drop files from @dd_files to the 
   list view control @lv. */
int
fm_add_dropped_files (listview_ctrl_t lv, HDROP dd_files)
{
    char name[384+4];
    int nfiles;
    int rc = 0;
    int i;
    
    memset (name, 0, sizeof (name));
    nfiles = DragQueryFile (dd_files, 0xFFFFFFFF, NULL, 0);
    for (i = 0;  i < nfiles; i++) {
        DragQueryFile (dd_files, i, name, sizeof (name) -1);
        if (is_directory (name))
            rc = fm_add_dir_files (lv, name);
        else
            rc = fm_set_ftype (lv, name);
        if (rc == -1)
            break; /* XXX: fixme? */
    }
    return rc;
}


/* Add a single file @name to the list view and before
   figure out the type of it. 
   Return value: 0 on success. */
static int
add_single_file (listview_ctrl_t lv, const char *name)
{
    const char *type;
    int rc = 0;

    type = fm_get_file_type (name, NULL);
    if (!type)
        return WPTERR_FILE_OPEN;
    if (!strcmp (type, "UNKNOWN"))      
        type = gnupg_check_file_ext (name, NULL);           
    rc = listview_add_item (lv, "");        
    if (!rc) {  
        listview_add_sub_item (lv, 0, 0, type);
        listview_add_sub_item (lv, 0, 1, name);
    }
    return rc;
}


/* Use the common Open-File-Dialog to allow the user to
   add one ore more selected files to the listview @lv. */
int
fm_add_opened_files (listview_ctrl_t lv, HWND dlg)
{
    OPENFILENAME open;
    char file[512], name[MAX_PATH+1];
    char *path = NULL;
    const char *s;
    int i, len=0, n=0;
    int rc=0;

    memset (&open, 0, sizeof (open));
    open.lStructSize = sizeof (OPENFILENAME);
    open.hInstance = glob_hinst;
    open.lpstrTitle = _("File Open");
    open.lpstrFilter = _("All Files (*.*)\0*.*\0\0");
    open.hwndOwner = dlg;
    open.lpstrFile = file;
    open.nMaxFile = sizeof (file) - 1;
    open.Flags = OFN_ALLOWMULTISELECT|OFN_EXPLORER ;
    
    memset (file, 0, sizeof file);
    if (!GetOpenFileName (&open))
        return 0;

    s = file;
    len = sizeof (file)-1;
    for (;;) {
        if (len < 2 || (*s == '\0' && *(s+1) == '\0'))
            break;
        memset (name, 0, sizeof (name));
        for (i=0; len > 0; len--, i++) {
            if (*s == '\0') {
                name[i] = *s++;
                break;
            }
            name[i] = *s++;
        }
        if (n == 0)
            path = strdup (name);
        else {
            char *p = make_filename (path, name, NULL);
            rc = add_single_file (lv, p);
            free (p);
        }
        n++;
    }
    if (n == 1) /* single file selected. */
        rc = add_single_file (lv, path);
    if (path)
        free (path);
    return rc;
}


int
fm_assume_onepass_sig (const char * fname)
{
    gpgme_data_t dat;
    armor_filter_context_t afx;
    gpg_iobuf_t fp;
    PACKET * pkt = (PACKET *)calloc (1, sizeof *pkt);
    int check = 0;

    if (!fname) {
        gpg_data_new_from_clipboard (&dat, 0);
        gpg_data_release_and_set_file (dat, "gpgme.tmp");

        fp = gpg_iobuf_open ("gpgme.tmp");
        if (!fp)
            return 0;
        gpg_iobuf_ioctl (fp, 3, 1, NULL);
        if (gpg_use_armor_filter(fp)) {
            memset (&afx, 0, sizeof (afx));
            gpg_iobuf_push_filter (fp, gpg_armor_filter, &afx);
        }
        gpg_init_packet (pkt);
        if (!gpg_parse_packet (fp, pkt)
            && pkt->pkttype == PKT_COMPRESSED)
            check = 1;  
        gpg_free_packet (pkt);
        safe_free (pkt);
        gpg_iobuf_close (fp);
        remove ("gpgme.tmp");
    }
    /* XXX: implement it for real files */
    return check;
}


int
fm_get_current_pos (listview_ctrl_t lv)
{
    int i = 0, items;

    items = listview_count_items (lv, 0);
    if (!items)
        return -1;
    else if (items == 1)
    {
        listview_select_one (lv, 0);
        return 0;
    }
    else if (items > 1)
    {
        i = listview_get_curr_pos (lv);
        if (i == -1)
        {
            msg_box (lv->ctrl, _("Please select a file."), _("File Manager"), MB_ERR);
            return -1;
        }
        return i;
    }

    return -1;
} /* fm_get_current_pos */


static int
fm_check_detached_sig( listview_ctrl_t lv, int pos )
{
    char type[128];

    listview_get_item_text( lv, pos, 0, type, 127 );
    return !strcmp( type, "SIGNED-DETACH" )? 1 : 0;
} /* fm_check_detached_sig */


int
fm_check_file_type (listview_ctrl_t lv, int pos, int fm_cmd)
{
    char status[128];
    int rc = 0;
    
    listview_get_item_text (lv, pos, 0, status, sizeof (status) - 1);
    
    switch (fm_cmd) {
    case FM_ENCRYPT:
    case FM_ENCRYPT_DIR:
    case FM_SIGNENCRYPT:   
        if (strcmp (status, "ENCRYPTED") 
            && strcmp (status, "SYMKEYENC"))
            rc = 1;
        break;
        
    case FM_DECRYPT: 
        if (!strcmp (status, "DATA")
            || !strcmp (status, "ENCRYPTED")
            || !strcmp (status, "SYMKEYENC") 
            || !strcmp (status, "ARMORED"))
            rc = 1;
        break;
        
    case FM_SIGN: 
        if( strncmp( status, "SIGNED", 6 ) ) 
            rc = 1;
        break;
        
    case FM_VERIFY: 
        if( !strncmp( status, "SIGNED", 6 ) 
             || !strcmp( status, "COMPRESSED" ) )
            rc = 1;
        break;
        
    case FM_SYMENC:
        if( strcmp( status, "SYMKEYENC" ) )
            rc = 1;
        break;
        
    case FM_IMPORT:
        if( !strcmp( status, "PUBKEY" )
            || !strcmp( status, "SECKEY" ) )
            rc = 1;
        break;
        
    case FM_WIPE:
    case FM_LIST:
        rc = 1; 
        break;  
    }
    
    return rc;
} /* fm_check_file_type */


static void
fm_set_status (listview_ctrl_t lv, int pos, int fm_cmd, int success,
               const char * output)
{
    char status[128], operat[128];
    int update = 1;
    const char *s;

    if ( fm_cmd == FM_LIST )
        return;
    success ? s = "SUCCESS" : s = "FAILED";
    strcpy( operat, s );

    switch (fm_cmd) {
    case FM_ENCRYPT: 
    case FM_ENCRYPT_DIR:
    case FM_SIGNENCRYPT: strcpy( status, "ENCRYPTED" ); break;
    case FM_DECRYPT:     strcpy( status, "UNKNOWN" );   break;
    case FM_SIGN:        strcpy( status, "SIGNED" );    break;
    case FM_VERIFY:      update = 0;                    break;
    case FM_SYMENC:      strcpy( status, "SYMKEYENC" ); break;
    case FM_IMPORT:      update = 0;                    break;
    case FM_WIPE:        strcpy( status, "WIPED" );     break;
    default:             strcpy( status, "UNKNOWN");    break;
    }

    if (success) {
        if (update) {
            listview_add_sub_item (lv, pos, 0, status);
            listview_add_sub_item (lv, pos, 1, output);
        }
    }
    listview_add_sub_item( lv, pos, 2, operat );
} /* fm_set_status */


int
fm_clearsign_8bit (listview_ctrl_t lv, fm_state_s *ctx)
{
    FILE *f;
    byte buf[32];
    char name[256];
    int i, n, cnt=0;

    if (ctx->sigmode != GPGME_SIG_MODE_CLEAR)
        return 0;
    listview_get_item_text (lv, -1, 1, name, sizeof (name)-1);
    if (stristr (name, ".TXT"))
        return 0;
    f = fopen (name, "rb");
    if (!f)
        return -1; /* should never happen */
    n = fread (buf, 1, 32, f);
    for (i = 0; i < n; i++) {
        if (buf[i] == 0x00 || buf[i] > 170)
            cnt++;
    }
    fclose (f);
    if (!cnt)
        return 0;
    n = -1;
    i = log_box (_("File Manager"), MB_WARN|MB_YESNO, 
                 _("\"%s\" does not seems to be a text file.\n"
                   "Do you really want to clearsign it?"), name);
    if (i == IDYES)
        n = 0;
    return n;
}

int
fm_parse_files (listview_ctrl_t lv, HWND dlg, int cmd)
{
    struct secdel_confirm_s confirm = {0};
    struct progress_filter_s pfx, pfx2;
    fm_state_s * ctx;
    int fm_cmd, sig_detached = 0;
    int rc = 0, i, n, ndel = 0;
    char fname[512], status[128];
    
    switch (cmd) {
    case ID_FILEMISC_ENCRYPT: fm_cmd = FM_ENCRYPT; break;
    case ID_FILEMISC_ENCRYPT_ZIP:fm_cmd = FM_ENCRYPT_ZIP; break;
    case ID_FILEMISC_DECRYPT: fm_cmd = FM_DECRYPT; break;
    case ID_FILEMISC_SYMENC:  fm_cmd = FM_SYMENC;  break;
    case ID_FILEMISC_SIGN:    fm_cmd = FM_SIGN;    break;    
    case ID_FILEMISC_VERIFY:  fm_cmd = FM_VERIFY;  break;
    case ID_FILEMISC_IMPORT:  fm_cmd = FM_IMPORT;  break;
    case ID_FILEMISC_WIPE:    fm_cmd = FM_WIPE;    break;
    case ID_FILEMISC_LIST:    fm_cmd = FM_LIST;    break;
    case ID_FILEMISC_SIGNENC: fm_cmd = FM_SIGNENCRYPT; break;
    default: return 1; /* unknown command */
    }
    
    if (fm_get_current_pos (lv) == -1)
        return WPTERR_GENERAL;
    rc = fm_state_new (&ctx);
    if (rc)
        BUG (0);
    ctx->dlg = dlg;

    // XXX: for file operations the progress dialog will be
    //       reloaded somewhere and thus a 'dummy' dialog remains

    /* we use it here to make sure that pfx_cleanup will not use
       any weird values. */
    memset (&pfx, 0, sizeof (pfx));
    ctx->prog_cb = NULL;
    if (cmd != FM_VERIFY && cmd != FM_SIGN /*&& reg_prefs.fm.progress > 0*/) {
        pfx.hwnd = dlg;
        /*gpgme_set_progress_cb (ctx->ctx, progress_callback, &pfx);*/
        /*ctx->prog_cb = &pfx;*/
    }
    
    /* Commands we need before we can perform the main command */
    switch (fm_cmd) {
    case FM_ENCRYPT_ZIP:
    case FM_ENCRYPT:
    case FM_SIGNENCRYPT:
        if (fm_cmd == FM_SIGNENCRYPT)
            ctx->req_signer = 1;
        DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_FILE_ENCRYPT, ctx->dlg,
                        file_encrypt_dlg_proc, (LPARAM)ctx);
        if (ctx->cancel == 1) {
            rc = WPTERR_GENERAL; 
            goto leave;
        }
        break;
        
    case FM_SIGN:
        DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_FILE_SIGN, dlg,
                        file_sign_dlg_proc, (LPARAM) ctx);
        if (ctx->cancel == 1 || fm_clearsign_8bit (lv, ctx)) {
            rc = WPTERR_GENERAL; 
            goto leave;
        }
        break;

    case FM_WIPE:
        memset (&pfx2, 0, sizeof (pfx2));
        secure_unlink_set_cb (progress_callback, &pfx2);
        break;
    }
    
    for( i = 0, n = 0;  i < listview_count_items( lv, 0 ); i++ ) {
        if( !listview_get_item_state( lv, i ) )
            continue;
        listview_get_item_text( lv, i, 0, status, sizeof (status) -1 );
        if (!strcmp( status, "ENCRYPTED" ) && fm_cmd == FM_DECRYPT)
            n++;
        if (!strcmp( status, "UNKNOWN" ) && fm_cmd == FM_SIGN)
            n++;
        if (fm_cmd == FM_WIPE)
            ndel++;
    }
    
    if (n > 1 && fm_cmd != FM_SYMENC)
        ctx->cache_cb = 1;

    if (fm_cmd == FM_WIPE && ndel > 0) {
        memset (&confirm, 0, sizeof confirm);
        confirm.lv_files = lv;
        DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_FILES_SECDEL, ctx->dlg,
                        file_secdel_confirm_dlg_proc, (LPARAM)&confirm);
        if (!confirm.yes)
            goto leave;
    }
    
    if (fm_cmd == FM_ENCRYPT_ZIP)
        fm_encrypt_into_zip (ctx, lv);

    for (i = 0; i < listview_count_items (lv, 0); i++) {
        if( !listview_get_item_state( lv, i ) )
            continue;
        listview_get_item_text( lv, i, 1, fname, sizeof (fname) - 1 );
        if( file_exist_check( fname ) && !is_directory( fname ) ) {
            log_box( _("File Manager"), MB_ERR, _("\"%s\" does not exist"), fname );
            continue;
        }
        if( is_directory( fname ) )
            fm_cmd = FM_ENCRYPT_DIR;        
        if( !fm_check_file_type( lv, i, fm_cmd ) )
            continue;
        sig_detached = fm_check_detached_sig( lv, i );
        switch (fm_cmd) {
        case FM_LIST:        rc = fm_list( fname, dlg );       break;
        case FM_WIPE:        rc = fm_wipe( fname );            break;
        case FM_ENCRYPT:     rc = fm_encrypt( ctx, fname, 0 ); break;
        case FM_ENCRYPT_DIR: rc = fm_encrypt_directory( ctx, fname ); break;
        case FM_SIGNENCRYPT: rc = fm_encrypt( ctx, fname, 1 ); break;
        case FM_DECRYPT:     rc = fm_decrypt( ctx, fname );    break;
        case FM_SIGN:        rc = fm_sign( ctx, fname );       break;
        case FM_SYMENC:      rc = fm_sym_encrypt( ctx, fname );break;
        case FM_VERIFY:      rc = fm_verify (ctx, sig_detached, fname);break;
        case FM_IMPORT:
            free_if_alloc (ctx->opaque);
            ctx->opaque = m_strdup (fname);
            if (!ctx->opaque)
                BUG (0);
            DialogBoxParam( glob_hinst, (LPCSTR)IDD_WINPT_IMPORT, dlg,
                           file_import_dlg_proc, (LPARAM)ctx );
            if (ctx->cancel == 1)
                continue;
            rc = fm_import (ctx, fname);
            break;
        }
        fm_set_status (lv, i, fm_cmd, !rc, ctx->output);
        free_if_alloc (ctx->output);
        progress_cleanup (&pfx);
    }

    if (fm_cmd == FM_WIPE) {
        secure_unlink_set_cb (NULL, NULL);
        progress_cleanup (&pfx2);
    }
    if (ctx->cache_cb) {
        release_gpg_passphrase_cb (&ctx->pass_cb);
        ctx->cache_cb = 0; /* make sure it's only used for this session! */
    }
    
    /* remove wipe files from the list */
    n = listview_count_items (lv, 0);
    while (n--) {
        listview_get_item_text (lv, n, 0, status, sizeof (status) - 1);
        if (!strcmp (status, "WIPED"))
            listview_del_item (lv, n);
    }
    
leave:
    if (!rc)
        fm_state_release (ctx);
    progress_cleanup (&pfx);
    return rc;
} /* fm_parse_files */


/* Wipe the given file @name with the delete mode
   from the configuration.
   Return value: 0 on success. */
int
fm_wipe (const char *name)
{
    int rc;

    SetCursor (LoadCursor (NULL, IDC_WAIT));
    remove_crit_file_attrs (name, 1);
    rc = secure_unlink (name, reg_prefs.wipe_mode);
    SetCursor (LoadCursor (NULL, IDC_ARROW));
    return rc;
}


/* Dump out the given PGP packets from file @name in a dialog. */
int
fm_list (const char *name, HWND dlg)
{
    dialog_box_param( glob_hinst, (LPCTSTR)IDD_WINPT_FILE_STAT, dlg,
                      file_stat_dlg_proc, (LPARAM)name, _("File Status"),
                      IDS_WINPT_FILE_STAT );
    return 0;
}


static int
ask_filename (fm_state_t c, const char *msg, char **dst)
{
    const char * s;

    s = get_filesave_dlg (c->dlg, msg, NULL, NULL);
    if (!s)
        return WPTERR_GENERAL;

    if (dst != NULL)
        free_if_alloc (*dst);
    free_if_alloc (c->output);
    c->output = m_strdup (s);
    if (!c->output)
        BUG (0);
    if (dst)
        *dst = fm_quote_file (s);
    return 0;
}


int
fm_encrypt (fm_state_t c, const char *name, int sign)
{
    gpgme_error_t err;
    gpgme_key_t key = NULL;
    gpgme_ctx_t ctx = c->ctx;
    file_data_t in=NULL, out=NULL;
    char *keyid = NULL, ext[5];
    /*int no_compr = 0;*/
    int rc = 0;

    c->output = new char[strlen (name) + 5 + 1];
    if (!c->output)
        BUG (0);
    strcpy (ext, file_get_extension (ctx, c->sigmode));
    strcpy (c->output, name);
    strcat (c->output, ext);        
    
    if (!overwrite_file (c->output)) {
        rc = ask_filename (c, _("Enter filename for encrypted file"), NULL);
        if (rc)
            goto leave;
    }

    err = gpg_file_data_new (name, 1, &in);
    if (err)
        goto leave;
    err = gpg_file_data_new (c->output, 0, &out);
    if (err)
        goto leave;

    /*
    if (c->prog_cb) {
        c->prog_cb->what = name;
        gpg_file_data_set_cb (in, c->prog_cb);
    }
    */
    
    /* XXX
    no_compr = is_multi_media (name);
    gpgme_control (ctx, GPGME_CTRL_NO_COMPR, no_compr);
    */

    if (sign) {
        if (gpgme_signers_enum (ctx, 0) == NULL) {
            keyid = get_gnupg_default_key ();
            if (!keyid) {
                msg_box (c->dlg, _("Could not get default secret key."),
                         _("Signing"), MB_ERR);
                rc = WPTERR_GENERAL;
                goto leave;
            }
            if (get_seckey (keyid, &key))
                BUG (0);
            gpgme_signers_add (ctx, key);
        }
        else {
            gpgme_key_t sigkey = gpgme_signers_enum (ctx, 0);
            if (sigkey && sigkey->subkeys) {
                keyid = m_strdup (sigkey->subkeys->keyid);
                if (!keyid)
                    BUG (NULL);
            }
        }
        if (!c->init_cb || !c->cache_cb) {
            set_gpg_passphrase_cb (&c->pass_cb, c->ctx, GPG_CMD_SIGN, 
                                   c->dlg, _("Signing"));
            c->init_cb = 1;
        }
        op_begin ();
        err = gpgme_op_encrypt_sign (ctx, c->recp, GPGME_ENCRYPT_ALWAYS_TRUST, 
                                     in->dat, out->dat);
        op_end ();
        if (!c->cache_cb)
            release_gpg_passphrase_cb (&c->pass_cb);
        if (c->pass_cb.cancel) {
            rc = WPTERR_GENERAL;
            goto leave;
        }
        if (err) {
            msg_box (c->dlg, gpgme_strerror (err), _("Sign"), MB_ERR);
            if (gpgme_err_code (err) == GPG_ERR_BAD_PASSPHRASE)
                agent_del_cache (keyid);
            rc = WPTERR_GENERAL; 
            goto leave;
        }
    }
    else {
        op_begin ();
        err = gpgme_op_encrypt (ctx, c->recp, GPGME_ENCRYPT_ALWAYS_TRUST,
                                in->dat, out->dat);
        op_end ();
        if (err) {
            msg_box (c->dlg, gpgme_strerror (err), _("Encrypt"), MB_ERR);
            rc = WPTERR_GENERAL; 
            goto leave;
        }
    }
    
leave:
    if (in)
        gpg_file_data_release (in);
    if (out)
        gpg_file_data_release (out);
    free_if_alloc (keyid);
    if (!rc && c->wipe)
        secure_unlink (name, WIPE_MODE_SIMPLE);
    return rc;
}


int
fm_sym_encrypt (fm_state_t c, const char * name)
{
    gpgme_ctx_t ctx = c->ctx;
    gpgme_error_t err;    
    file_data_t in=NULL, out=NULL;
    int rc = 0, cancel = 0;
    char ext[5], * pass;    
    
    pass = request_passphrase2 (_("Symmetric"), 0, &cancel);
    if (cancel)
        return 0;
    
    /* XXX gpgme_control (ctx, GPGME_CTRL_CIPHER, -1);*/
    c->output = new char[strlen (name) + 5 + 1];
    if (!c->output)
        BUG (0);
    strcpy (ext, file_get_extension (ctx, c->sigmode));
    strcpy (c->output, name);
    strcat (c->output, ext);

    if (overwrite_file (c->output) == 0) {
        rc = WPTERR_GENERAL;
        goto leave;     
    }

    gpgme_set_passphrase_cb (ctx, sym_passphrase_cb, pass);    

    err = gpg_file_data_new (name, 1, &in);
    if (err)
        goto leave;
    err = gpg_file_data_new (c->output, 0, &out);
    if (err)
        goto leave;

    op_begin ();
    err = gpgme_op_encrypt (ctx, NULL, GPGME_ENCRYPT_ALWAYS_TRUST, 
                            in->dat, out->dat);
    op_end ();
    if (err) {
        msg_box (c->dlg, gpgme_strerror (err), _("Symmetric"), MB_ERR);
        rc = WPTERR_GENERAL;
        goto leave;
    }
    if (file_exist_check (c->output)) {
        msg_box (c->dlg, _("Encryption failed."), _("Symmetric"), MB_ERR);
        rc = WPTERR_GENERAL;
    }
    
leave:
    if (in)
        gpg_file_data_release (in);
    if (out)
        gpg_file_data_release (out);
    sfree_if_alloc (pass);
    return rc;
} /* fm_sym_encrypt */


/* Show the human readable verify result from @sigres. */
static void
show_verify_result (gpgme_verify_result_t sigres)
{
    gpgme_key_t key=NULL;
    gpgme_signature_t sig=sigres->signatures;
    const char *s, *keyid;
    int sigok = 0;
    int type;
    char buf[384];

    sig = sigres->signatures;
    sigok = sig->summary & GPGME_SIGSUM_GREEN;
    s = sigok? _("Good signature") : _("BAD signature");
    type = sigok? MB_OK: MB_ICONWARNING|MB_OK;
    keyid = sig->fpr;   
    if (!keyid)
        return;

    keyid = strlen (sig->fpr) == 40? sig->fpr+32 : sig->fpr + 24;
    get_pubkey (sig->fpr, &key);
    _snprintf (buf, sizeof (buf)-1, "Signature made %s using %s key ID %s\n"
                                    "%s from \"%s\"",
                strtimestamp (sig->timestamp), get_key_pubalgo (sig->pubkey_algo),
                keyid, s, key? key->uids->uid : _("user ID not found"));
    msg_box (NULL, buf, _("Decrypt Verify"), type);
}


/* Check the recipients if we have at least one secret key. */
bool
secret_key_available (gpgme_recipient_t rset)
{
    gpgme_recipient_t r;
    gpgme_key_t key;

    for (r=rset; r; r = r->next) {      
        if (gpgme_err_code (r->status) == GPG_ERR_NO_SECKEY)
            continue;
        else {
            /* extra check to make sure the key is available right now. */
            if (!get_seckey (r->keyid, &key))
                return true;
        }
    }
    return false;
}


/* Decrypt the file @name. */
int
fm_decrypt (fm_state_t c, const char *name)
{
    gpgme_error_t err;
    gpgme_ctx_t ctx = c->ctx;    
    gpgme_decrypt_result_t res;
    gpgme_verify_result_t sigres;
    file_data_t in =NULL, out=NULL;
    int rc = 0;
    
    if (!c->init_cb || !c->cache_cb) {
        set_gpg_passphrase_cb (&c->pass_cb, c->ctx, GPG_CMD_DECRYPT, 
                               c->dlg, _("Decryption"));
        c->init_cb = 1; 
    }    
    
    c->output = m_strdup (name);
    if (!c->output)
        BUG (0);
    if (is_openpgp_ext (c->output))
        c->output[strlen (c->output)-4] = '\0';
    else {
        const char *s;
        s = get_filesave_dlg (c->dlg, _("Choose Filename for Output"),
                              NULL, NULL);
        if (s) {
            free_if_alloc (c->output);
            c->output = m_strdup (s);
            if (!c->output)
                BUG (NULL);
        }
    }

    if (overwrite_file (c->output) == 0) {
        rc = ask_filename (c, _("Please enter filename for plaintext file"), NULL);
        if (rc)
            goto leave;
    }    

    remove_crit_file_attrs (c->output, 0);

    err = gpg_file_data_new (name, 1, &in);
    if (err)
        goto leave;
    err = gpg_file_data_new (c->output, 0, &out);
    if (err)
        goto leave;

    op_begin ();
    err = gpgme_op_decrypt_verify (ctx, in->dat, out->dat);
    op_end ();
    if (!c->cache_cb)
        release_gpg_passphrase_cb (&c->pass_cb);
    if (c->pass_cb.cancel) {
        rc = WPTERR_GENERAL;
        goto leave;
    }

    res = gpgme_op_decrypt_result (ctx);
    if (res && res->recipients && !secret_key_available (res->recipients)) {
        const char *keyid = res->recipients->keyid;
        char *p = get_key_userid (keyid+8);
        gpgme_pubkey_algo_t pkalgo = res->recipients->pubkey_algo;
        
        log_box( _("Decryption"), MB_ERR, 
                 _("Encrypted with %s key, ID %s.%s\n"
                   "Decryption failed: secret key not available."), 
                   get_key_pubalgo (pkalgo), keyid+8, p);
        rc = WPTERR_GENERAL;
        free_if_alloc (p);
        goto leave;
    }
    else if (err) {
        msg_box (c->dlg, gpgme_strerror (err), _("Decrypt"), MB_ERR);
        rc = WPTERR_GENERAL;
        goto leave;
    }
    if (file_exist_check (c->output)) {
        log_box ("Decrypt", MB_ERR, _("Decryption failed.\n%s: does not exist."), c->output);
        rc = WPTERR_GENERAL;
    }
    
    sigres = gpgme_op_verify_result (ctx);
    if (sigres && sigres->signatures)
        show_verify_result (sigres);
    
leave:
    if (in)
        gpg_file_data_release (in);
    if (out)
        gpg_file_data_release (out);
    return rc;
}


int
fm_sign (fm_state_t c, const char * name)
{       
    int rc = 0;
    gpgme_ctx_t ctx = c->ctx;
    gpgme_error_t err;
    file_data_t in=NULL, out=NULL;
    char ext[5];

    if (!c->init_cb || !c->cache_cb) {
        set_gpg_passphrase_cb (&c->pass_cb, c->ctx, GPG_CMD_SIGN, c->dlg, _("Signing") );
        c->init_cb = 1;
    }
    
    free_if_alloc (c->output);
    c->output = new char[strlen (name) + 5 + 1];
    if( !c->output)
        BUG( NULL );
    strcpy (ext, file_get_extension (ctx, c->sigmode));
    strcpy (c->output, name);
    strcat (c->output, ext);
    
    if (!overwrite_file (c->output)) {
        rc = ask_filename (c, _("Enter filename for signed file"), NULL);
        if (rc)
            goto leave;
    }
    remove_crit_file_attrs (c->output, 0);

    err = gpg_file_data_new (name, 1, &in);
    if (err)
        goto leave;
    err = gpg_file_data_new (c->output, 0, &out);
    if (err)
        goto leave;

    op_begin ();
    err = gpgme_op_sign (ctx, in->dat, out->dat, c->sigmode);
    op_end ();
    if( !c->cache_cb )
        release_gpg_passphrase_cb (&c->pass_cb);
    if( c->pass_cb.cancel ) {
        rc = WPTERR_GENERAL;
        goto leave;
    }
    if( err ) {
        msg_box( c->dlg, gpgme_strerror( err ), _("Sign"), MB_ERR );
        rc = WPTERR_GENERAL;
        goto leave;     
    }

leave:
    if (in)
        gpg_file_data_release (in);
    if (out)
        gpg_file_data_release (out);
    return rc;
}


static int
fm_add_sig_stat (file_sig_ctx_t log)
{
    gpgme_key_t key;    
    const char *kid;

    kid = log->sig->fpr;
    if (!kid)
        BUG (NULL);
    if (strlen (kid) == 40)
        kid += 32;      
    else if (strlen (kid) == 32)
        kid += 24;
    if (get_pubkey (kid, &key))
        log->use_uid = 0;
    else {
        log->user_id = key->uids->uid;
        log->use_uid = 1;
    }
    file_verify_add_state (log);
    return 0;
}


static int
verify_pasted (listview_ctrl_t lv, fm_state_t ctx, const char * dat,
               int i, HWND dlg)
{
    FILE * fp;
    char stat[32];
    char file[256], * fname = NULL;
    int del_end=0;

    listview_get_item_text (lv, i, 0, stat, sizeof (stat)-1);
    listview_get_item_text (lv, i, 1, file, sizeof (file)-1);
    if (strcmp (stat, "UNKNOWN"))
        return 0;
    fname = make_filename (NULL, file, "asc");
    if (file_exist_check (fname) != 0) {
        fp = fopen (fname, "wb");
        if (fp == NULL) {
            log_box (_("File Manager"), MB_ERR, "could not create '%s'", fname);
            free_if_alloc (fname);
            return WPTERR_GENERAL;      
        }       
        fwrite (dat, 1, strlen (dat), fp);
        fclose (fp);
        del_end = 1;
    }
    fm_verify (ctx, 1, fname);
    if (del_end)
        remove (fname);
    free_if_alloc (fname);
    return 0;
}


int
fm_verify_pasted_detsig (listview_ctrl_t lv, HWND dlg)
{
    fm_state_t ctx = NULL;
    char * dat=NULL;
    int i, fnd = 0;

    dat = get_clip_text (NULL);
    if (!dat || !strstr (dat, "BEGIN PGP SIGNATURE")) {
        msg_box (dlg, _("Could not find detached signature in the clipboard."),
                 _("File Manager"), MB_ERR);
        free_if_alloc (dat);
        return WPTERR_GENERAL;
    }
    /* XXX find a way to filter out bad signatures or just ignore all in 
           this case */
    fm_state_new (&ctx);
    if ((i=listview_get_curr_pos (lv)) != -1) {
        verify_pasted (lv, ctx, dat, i, dlg);
        fnd = 1;
    }
    else {
        for (i=0; i < listview_count_items (lv, 0); i++) {
            verify_pasted (lv, ctx, dat, i, dlg);
            fnd = 1;
        }
    }
    if (!fnd)
        msg_box (dlg, _("No files to check."), _("File Manager"), MB_INFO);
    free_if_alloc (dat);
    fm_state_release (ctx);
    return 0;
}


/* Extract automatically the output file name from @name.
   If @detached is 1, a detached sig is assumed. */
static int
get_output_file (fm_state_t c, const char *name, int detached)
{
    const char *file = NULL;
    const char *title;
    char fname[384];
    
    if (detached)
        title = _("Select Data File");
    else
        title = _("Selected Output File");

    if (strstr (name, ".sig") || strstr (name, ".asc") || strstr (name, ".gpg")) {
        _snprintf (fname, sizeof (fname) - 1, "%s", name);
        fname[strlen (fname) - 4] = '\0';
        if (file_exist_check (fname) == 0 && detached)  
            file = fname;
        else if (!detached) {
            /* If the signature is clear or normal, make sure we do not
               overwrite the original file if it exists. */
            if (file_exist_check (fname) == 0 && !overwrite_file (fname)) {
                file = get_filesave_dlg (c->dlg, title, NULL, NULL);
                if (!file)
                    return WPTERR_GENERAL;
            }
            else
                file = fname;
        }
    }
    if (!file)
        file = get_fileopen_dlg (c->dlg, title, NULL, NULL);
    if (file) {    
        free_if_alloc (c->output);    
        c->output = m_strdup (file);
        if (!c->output) 
            BUG (NULL);
    }
    else {
        msg_box (c->dlg, _("Invalid file name. Exit"), _("Verify"), MB_ERR);
        return WPTERR_GENERAL;  
    }
    if (detached)
        c->sigmode = GPGME_SIG_MODE_DETACH;
    else {
        if (strstr (name, ".asc"))
            c->sigmode = GPGME_SIG_MODE_CLEAR;
        else
            c->sigmode = GPGME_SIG_MODE_NORMAL;
    }
    return 0;
}


/* Verify the signature from the file @name. If @detached 1,
   it is assumed that a detached signature should be checked. */
int
fm_verify (fm_state_t c, int detached, const char *name)
{
    gpgme_ctx_t ctx = c->ctx;
    gpgme_error_t err;
    gpgme_signature_t s;
    gpgme_verify_result_t res;
    struct file_sig_ctx_s log;
    file_data_t in=NULL, out=NULL;
    int rc = 0;

    if (strstr (name, ".sig"))
        detached = 1;

    if (get_output_file (c, name, detached))
        return WPTERR_GENERAL;

    memset (&log, 0, sizeof (log));
    log.file = m_strdup (name);
    if (!log.file)
        BUG (NULL);
    file_verify_create_dlg ();

    err = gpg_file_data_new (name, 1, &in);
    if (err)
        goto leave;
    err = gpg_file_data_new (c->output, detached? 1 : 0, &out);
    if (err)
        goto leave;

    op_begin ();
    if (c->sigmode == GPGME_SIG_MODE_DETACH)
        err = gpgme_op_verify (ctx, in->dat, out->dat, NULL);
    else
        err = gpgme_op_verify (ctx, in->dat, in->dat, out->dat);
    op_end ();
    if (err) {
        msg_box (c->dlg, gpgme_strerror (err), _("Verify"), MB_ERR);
        rc = WPTERR_GENERAL; 
        goto leave;
    }    

    res = gpgme_op_verify_result (ctx);
    for (s=res->signatures; s; s=s->next) {
        log.sig = s;
        fm_add_sig_stat (&log);
    }
    if (!c->output)
        c->output = m_strdup (name); /* for later use */

leave:
    if (in)
        gpg_file_data_release (in);
    if (out)
        gpg_file_data_release (out);
    if (log.file)
        delete []log.file;
    return rc;
}


int
fm_import (fm_state_t c, const char *name)
{
    gpgme_ctx_t ctx = c->ctx;
    gpgme_error_t err;
    gpgme_import_result_t res;
    file_data_t keydata = NULL;
    int rc = 0;

    free_if_alloc (c->output);
    c->output = m_strdup (name);
    if (!c->output)
        BUG (NULL);

    err = gpg_file_data_new (name, 1, &keydata);
    if (err)
        goto leave;

    op_begin ();
    err = gpgme_op_import (ctx, keydata->dat);
    op_end ();
    if (err) {
        msg_box (c->dlg, gpgme_strerror (err), _("Import"), MB_ERR);
        rc = WPTERR_GENERAL;
        goto leave;
    }

    res = gpgme_op_import_result (ctx);
    print_import_status (res);
    if (res->no_user_id > 0) {
        msg_box (c->dlg, _("Key without a self signature was dectected!\n"      
                           "(This key is NOT usable for encryption, etc)\n"
                           "\n" 
                           "Cannot import these key(s)!"), _("Import"), MB_INFO);
    }

leave:
    if (keydata)
        gpg_file_data_release (keydata);
    return rc;
} /* fm_import */


/* Export the selected keys from the File Manager to a file. */
int
fm_export (fm_state_t c)
{
    int rc = 0;
    gpgme_ctx_t ctx = c->ctx;
    gpgme_error_t err;
    gpgme_key_t *rset = c->recp;
    file_data_t keydata = NULL;
    const char *name;
    char *p = NULL, *patt = NULL;

    if (!rset || !rset[0]) {
        msg_box (c->dlg, _("No key was selected for export."), _("Export"), MB_ERR);
        rc = WPTERR_GENERAL; 
        goto leave;
    }

    if (rset[1] == NULL) { /* count == 1*/
        gpgme_key_t k = rset[0];
        const char *s = k->uids->name;
        p = new char[strlen (s)+1+8];
        if (!p)
            BUG (NULL);
        strcpy (p, s );
        strcat (p, ".asc");
    }

    name = get_filesave_dlg (c->dlg, _("Choose Name for Key File"), 
                             NULL, p? p : NULL);
                             
    if (!name)
        name = "keys.gpg";

    patt = gpg_keylist_to_pattern (rset, c->n_recp);

    err = gpg_file_data_new (name, 0, &keydata);
    if (err)
        goto leave;

    op_begin ();
    err = gpgme_op_export (ctx, patt, 0, keydata->dat);
    op_end ();
    if (err) {
        msg_box (c->dlg, gpgme_strerror (err), _("Export"), MB_ERR);
        rc = WPTERR_GENERAL;
        goto leave;     
    }
    log_box (_("GnuPG status"), MB_OK, _("Finished (Output: %s)"),  name);

leave:
    if (keydata)
        gpg_file_data_release (keydata);
    if (patt)
        free (patt);
    free_if_alloc (p);
        
    return rc;
}


/* Parse the command line and process the given file. */   
int
fm_parse_command_line (char *cmdl)
{
    fm_state_t ctx;
    const char *s;
    char *p, *fn = NULL;
    int count = 0, detached = 0;
    int type;
    
    if (!cmdl || !*cmdl)
        return 0;

    fm_state_new (&ctx);    
    ctx->dlg = GetActiveWindow ();
    ctx->cache_cb = 1;
    
    p = cmdl;
    if (p && *p > 32 && !stristr (p, "winpt.exe") 
                     && !strstr (p, "--" )) {
        count++;
        if (*p == '"') { /* need to remove quotes */
            fn = new char[strlen (p)];
            if (!fn)
                BUG (NULL);
            memcpy (fn, p+1, strlen (p) - 2);
            fn[strlen (p) -2] = '\0';
        }
        else
            fn = m_strdup (p);
        s = fm_get_file_type (fn, &type);
        if (!s || !strcmp (s, "UNKNOWN"))
            s = gnupg_check_file_ext (fn, &type);
        if (type == PGP_NONE) {
            log_box (_("File Manager"), MB_ERR, 
                     _("%s: no valid OpenPGP data found."), p);
            free_if_alloc (fn);
            return count;
        }
        switch (type) {
        case PGP_MESSAGE:
            fm_decrypt (ctx, fn); 
            break;

        case PGP_PUBKEY:
        case PGP_SECKEY:
            fm_import (ctx, fn); 
            break;

        case PGP_SIG:
        case PGP_CLEARSIG:
            file_verify_use_event ();
            if (type == PGP_SIG)    
                detached = 1;
            fm_verify (ctx, detached, fn);
            file_verify_wait ();
            break;
            
        default:
            break;
        }
    }

    wipememory (&ctx->pass_cb, sizeof (ctx->pass_cb));
    free_if_alloc (fn);
    fm_state_release (ctx);
    return count;
}


const char*
default_dirname (const char *name)
{
    char * p = strrchr( name, '\\' );
    if( !p )
        return NULL;
    return p+1;
} /* default_dirname */


/* Store all selected files from @lv in a zip archive
   and encrypt the zip archive then.
   Return value: 0 on success. */
int
fm_encrypt_into_zip (fm_state_t ctx, listview_ctrl_t lv)
{
    PK_FILE_LIST list=NULL;
    const char *outfile;
    char *out_enc;
    int nitems = listview_count_items (lv, 0);
    int i, idx = -1;
    int rc;

    if (!nitems) {
        msg_box (NULL, _("Encrypting into a ZIP archive makes sense with multiple files"),
                 _("File Manager"), MB_ERR);
        return -1;
    }

    outfile = get_filesave_dlg (NULL, _("Choose File Name for Output"),
                                NULL, "encrypted_files.zip");
    if (!outfile)
        return -1;

    for (i=0; i < nitems; i++) {
        char name[300];
        if (!listview_get_item_state (lv, i))
            continue;
        if (idx == -1)
            idx = i;
        listview_get_item_text (lv, i, 1, name, sizeof (name)-1);
        pk_list_add (&list, name);
    }    

    pk_archiv_create (list, outfile);
    pk_list_free (list);

    rc = fm_encrypt (ctx, outfile, 0);
    DeleteFile (outfile);
    if (rc)
        return rc;

    out_enc = make_filename (NULL, outfile, "gpg");
    fm_set_status (lv, idx, FM_ENCRYPT, 1, out_enc);
    free_if_alloc (out_enc);

    for (i=0; i < nitems; i++) {
        if (i != idx && listview_get_item_state (lv, i))
            listview_del_item (lv, i);
    }
    return 0;
}


int
fm_encrypt_directory( fm_state_t c, const char * name )
{
    PK_FILE_LIST list = NULL;
    WIN32_FIND_DATA findbuf;
    HANDLE hd;
    const char * s;
    char * patt = NULL, * p;
    int rc = 0;
    
    if( !is_directory( name ) )    
        return -1;
    patt = new char[strlen( name ) + 4];
    if( !patt )
        BUG( NULL );
    strcpy( patt, name );
    strcat( patt, "\\*" );
    hd = FindFirstFile( patt, &findbuf );    
    if( !hd ) {
        free_if_alloc( patt );  
        return -1;      
    }
    if( strcmp( findbuf.cFileName, "." ) && strcmp( findbuf.cFileName, ".." ) ) {
        p = make_filename( name, findbuf.cFileName, NULL );
        pk_list_add( &list, p );
        free_if_alloc( p );
    }
    while( FindNextFile( hd, &findbuf ) ) {
        if( strcmp( findbuf.cFileName, "." ) && strcmp( findbuf.cFileName, ".." ) ) {
            p = make_filename( name, findbuf.cFileName, NULL );
            pk_list_add( &list, p );
            free_if_alloc( p );
        }
    }
    s = get_filesave_dlg( c->dlg, _("Choose a Name for the Archive"), 
                          NULL, default_dirname( name ) );
    if( !s ) {
        msg_box( c->dlg, _("Invalid archive name. Exit."), _("Encrypt Directory"), MB_ERR );
        rc = -1;
        goto leave;
    }

    rc = pk_archiv_create( list, s );
    if( rc )
        msg_box( c->dlg, _("Could not create zip archive."), _("Encrypt Directory"), MB_ERR );
    else {
        fm_encrypt( c, s, 0 );
        remove( s );
    }
leave:
    FindClose (hd);
    pk_list_free( list );
    free_if_alloc( patt );
    return rc;
} /* fm_encrypt_directory */


static int CALLBACK
fm_cmp_cb( LPARAM first, LPARAM second, LPARAM sortby )
{
    const char * a = 0, * b = 0;

    switch( (int)sortby ) {
    case FM_SORT_STAT:
        break;
    case FM_SORT_NAME:
        break;
    case FM_SORT_OP:
        break;
    }
    return stricmp( a, b );
} /* fm_cmp_cb */
        

int
fm_sort( listview_ctrl_t lv, int sortby )
{
    return listview_sort_items( lv, sortby, fm_cmp_cb );
} /* fm_sort */


void
fm_print_md( listview_ctrl_t lv, HWND dlg, int mdalgo )
{
    struct md_file_s mdctx;

    if( listview_count_items( lv, 0 ) == 0 )
        return;
    memset (&mdctx, 0, sizeof (mdctx));
    mdctx.lv = lv;
    mdctx.mdalgo = mdalgo;
    DialogBoxParam( glob_hinst, (LPCTSTR)IDD_WINPT_FILE_MDSUM, dlg,
                    mdsum_dlg_proc, (LPARAM)&mdctx );
} /* fm_print_md */


/* Send the selected file in @lv via MAPI to a mail recipient. */
int
fm_send_file (listview_ctrl_t lv)
{
    char buf[128];
    int rc;

    rc = listview_get_item_text (lv, -1, 1, buf, sizeof (buf)-1);
    if (rc != -1)
        mapi_send_ascfile (buf);
    return 0;
}